Twister spool



P 9 H. D. CLINTON 2,130,265

TWISTER SPOOL Filed June 21, 1937 Patented Sept. 13, 1938 UNITED STAEEPATENT QFFHQE TWISTER SPOOL This invention relates to improvements intextile spools and. bobbins, with reference more particularly to twisterspools and twister head attachments.

A primary object is to provide an improved twister spool, or twisterspool head-having a certain desirable resiliency and work adaptability,combined with unusual strength and durableness.

Another important object is to provide such a spool, or head, ofinexpensive make, or which can be produced at a. saving of cost, as bythe utilization of material that would otherwise be waste and useless.

Lightness in weight, security in assembly and long wear propertiesassociated with an established non-breakable characteristic are furtherdesiderata had in view.

The invention and its special advantages will be best understood fromfurther description. with reference to the attached drawing,illustrating one practicable embodiment thereof in the preferred form ofan ordinary warping type of spool.

In said drawing:

Fig. 1 is a perspective view of the spool;

Fig. 2 is a fragmentary, partly sectional view of one end thereof;

Fig. 3 is a top plan view of said end or twister head part of the spool;

Fig. 4 is a plan View of one of the twister head parts; and

Fig. 5 is a side or edge View of the latter.

In the illustrative construction, the spool barrel 6 comprises acylinder body composed of wood. Ordinarily, and in the present instance,the body is hollowed by a central longitudinal bore, not shown, and isinternally shouldered by counterbores, also not shown, at the ends, asis common to constructions of the kind. This bore and counterboring, inaddition to forming the internal shouldering, is intended to provide forengagement of the barrel over the shaft or shank of a twister spindle.The hollowing thereby is gauged so as to render said body as light aspossible and still leave a wall, or walls, of a thickness great enoughto give it adequate assembly and wearing strength.

On the ends of this barrel the spool heads in this instance comprisedisc plates 1 composed of hard vulcanized fibre. These heads are cut orstamped out of sheets of the material, and are trimmed or lathed down,and polished to have entirely smooth face and edge surfaces, with theedges preferably rounded. The character of said material, asdemonstrated by previous extensive use and test, is such that the headswill not Johnson City, N. Y.

1937, Serial No. 149,494

splinter, split or crack and cannot be broken easily, and yet have acertain resiliency, especially after aflixture to the barrel, which isobserved particularly by their tendency to rebound when dropped cantwiseupon a hard surface. Consequently, they are highly wear resistant andrender the spool substantially unbreakable, even when dropped or struckwith considerably hard blows.

Said heads are secured to the barrel ends in this instance by hardwooden fastening plugs 8 extending therethrough into and lodged withinthe aforementioned counterbore recesses of the barrel, with a compressedor Wedge-squeeze action clamping them against said ends. These plugs areformed with head portions, not visible, received within center openings(not referenced) inv the heads, and reduced shank portions, also notvisible, received within said counterbores of the barrel against theinner shouldering of the latter, so as to draw and hold the heads tightto the barrel by pressure insertion into place. Glue applied to theshanks of the plugs retains them firmly in place. These plugs have alongitudinal bore or opening 9 coaxial with the bore of the barrel andtheir outer ends are trimmed or dressed down flush with the outer facesurfaces of the heads.

In this instance, the plug fastening is aug mented by a metal lockingring or ferrule ill fitted as a liner around the head portion of eachplug, which serves to intensify the squeeze or bind and to pinion theplug in place with a greatly strengthened and rigidified fastening. Saidring has an upper flange, alone appearing in the drawing, overextendinga lipped portion of the head around its central opening and a lowerflange, not visible, underengaging the head portion of the plug againstthe aforenamed shouldering of the barrel, while its body is ribbed orprovided with teeth (not shown), circumferentially, which engage intothe parts between which the ring is pressed so as to be locked therewithin a positive hold. A specific illustration of this described augmentalfastening will be found in my prior Patent No.. 1,987,991 dated January15, 1935 for an Improved spool or bobbin. It will be noted that thefastening plug and locking ring at the end of the spool are both turnedor worked down absolutely flush with the outer surface of the head sothat the latter will be entirely fiat all the way across.

On the outer face of the head at one end of the spool a pair ofsegmental plate members ll consummate the twister spool formation. Theseplates members are substantially semicircular or crescentic in shape andare oppositely formed, or correspondingly formed and oppositely disposedto each other. Each has a recess H in its inward or chordal edge,arcuated in conformity with the bore or opening (9) of the fastenerplug. They are placed, in circular relation, on opposite sides of saidbore or opening with their said recesses in register with the same, andwith a gap or spacing I2 therebetw-een providing a slot into which thedriving lug (not shown) of a twister spindle may fit. When applied to aspindle, thus engaging its lug, the spool of course rests directly uponthe latter which bears against the fiat head surface. Said plate membersare composed of the same material as the spool heads and areadvantageously cut or stamped out of remnant or waste pieces of thesheets from which said heads are cut. They are applied to the heads inthis instance by rivets i3 extending through both the members and saidheads, holding them securely in place.

The described plate members thus combined with the regular spool headprovide an improved twister head, or twister head attachment. Not onlydo they give the head the necessary thickness or height to fitoperatively upon the spindle, but, being composite with the regularhead, they contribute and afford a greater resiliency in action upon thespindle. This greatly reduces and substantially eliminates the factorsof breakage and Wear. The resiliency is also increased by the fact thatthe attachment is in two pieces, other than a single piece which addsrigidity to any ordinary head. Moreover, this two -piece attachmentprovides an open-ended slot, adapting the spool to application orengagement upon a twister spindle with any length, or width, of drivinglug. The open ends of the slot allow lint from the yarn to be thrown outby centrifugal force so as to keep it clean, instead of collectingtherein with the formation of slugs that may drop or catch and causedefects in the yarn. The dual plate members can be applied moreaccurately and accommodatingly than a single plate, and are somewhatlighter in weight so as to require less driving power for the spool.Finally, these slot forming members are the only wearing parts of thespool and can be replaced, when suificiently worn, at less cost than afull circular or closedend plate.

In addition to the foregoing, the described improvement is very simpleand has the economic advantage that it can be produced at a materiallyless cost in manufacture than the ordinary or generally employed deviceof the kind. The possible utilization of remnant or otherwise Wastematerial allows a considerable saving, especially in quantityproduction.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent of the United States is:

1. A twister spool, comprising a barrel having a longitudinal bore, alaterally extending disc head of hard-fibre material secured on the endof the barrel and having an opening therethrough to said bore, and apair of segmental plate members on the outer face of the head oppositelydisposed on opposite sides of the bore opening therethrough, said platemembers being of the same material as the head and having a form andspacing th-erebetween providing an open-ended slot diametrically acrossthe head without closing or constricting the said bore opening.

2. A twister spool, comprising a barrel of a fibre material having alongitudinal bore, disclike heads of a different and hard vulcanizedfibre material fastened on the ends of the barrel and means fasteningsaid heads to the barrel with central openings therethrough to saidbore, combined with a pair of segmental plate members fixed on the outerface of one of the heads upon opposite sides of the opening therethroughto the bore, said plate members being of the same material as the headsand having a form and spacing between each other providing an opencndedtwister slot diametrically across the head adapting the spool to beengaged upon a twister spindle with its said head resting upon thedriving lug of the latter and with said lug fitting into said slot ofthe former and the centering shaft of the spindle extending into thebore opening of the barrel.

HARRY D. CLINTON.

